Water-trap



(No Model.)

W. A. MUNDY.

WATER TRAP.

Patented July I, 189 0.

Inventor itnesses:

7 lowing is a full, clear,

UNITED STATES PATENT OFFICE.

\VILLIAM A. MUNDY, OF PHILADELPHIA, PENNSYLVANIA.

WATER-TRAP.

SPECIFICATION forming part of Letters Patent No. 431,384, dated July 1, 1890.

Application filed November 16, 1889. Serial N 0. 330,537. (No model.)

To all whom it may concern.-

Be it known that I, \VILLIAM A. MUNDY, a citizen of the United States, residing in the city of Philadelphia, State of Pennsylvania, have invented certain new and useful Improvements in l/Vater-Traps, of which the foland exact description, reference being had to the accompanying, drawings, forming a part of this specification.

My invention relates to water-traps designed to prevent the egress of foul air from the dischargepipe back to the water-basin, and has for its object the improvement in such device of the valve-seat and the automatic tight seating with certainty of the ballvalve; also of the construction and arrangement of the valve-chamber relatively to the inlet-pipe and discharge-chamber; and for tical sectional view,

these purposes it consists of the features herenafter fully described.

Referring to the drawings, Figure 1 is a verpartly in front elevation,

' showing the construction of the valve-seat in the bell-shaped mouth of the inlet-pipe to the trap, the annular opening formed between the same and the dividingwall between the lower shell or casing and the valve-cha1nber, and the location and arrangement within the former of inlet and discharge pipes. Fig. 2 is atransverse horizontal sectional view through the line a b of Fig. 1 with the ball-valve removed from its seat.

The apparatus is constructed as follows: The trap-pipe O,which conveys the water into the valve-chamber F and discharge-chamber H, which has its discharge end in the chamber l-l curved upward, is preferably cast integral with said chamber I-l,with its discharge-opening as nearly central therein as possible, and of bell-mouth form or internally beveled to form a cup-valve seat. The said chamber II has a top covering N, preferably cast integral with it, and which is so arranged relatively to the discharge end of the trap-pipe O as to form between the two an annular opening D. The edges of the covering N and the discharge end of the pipe 0 are ground to form a spherical valve-seat for the ball-valve G. The val vechamber F is formed by a glass or metal covering secured air-tight to extended end of the discharge-chamber H by means of a screwjoint or otherwise. The said covering N of the discharge-chamber H is preferably provided with an opening or air-passage L, (see both figures ot the drawings,) in order that when the level of the water w falls below the point at which the ball G will rise from the cup-valve seat the tendency to a vacuum in the chamber F, caused by the exit or discharge of the water therefrom, will be overcome by the entrance of air through the opening L, and the discharging volume of water will carry the ball with celerity and certainty to its true position on its valve-seat, while should there afterward occur any backfiow of water after the head of the discharge-column has fallen below the line of the valve-seat, a con tinuous suction or pressure thereby produced would tend to hold the ball-valve more firmly in its seat until released by a new column of water discharged through the pipe (J, the action of the parts as described being to hold the ball-valve G in its seat during the whole time that there is no intervening column of discharging water passing through the annular opening D in the valve-seat, and cut off all connection with the inlet or discharge pipe 0, leading upward to the basin B,which is attached to the pipe 0 or its connections by means of the joint A, or in any other usual and suitable manner. By the arrangement shown of the pipe 0 relatively to the dischargechamber H and the covering N thereof, and of the construction and arrangement of the several parts of the apparatus, as described, I am enabled to provide a cheap and economical and yet effective and eificient water-trap in the chamber H, in which there will always be sufficient suction to keep the ball-valve G constantly in its improved seat, as described, when the level of the water shall fall below an annular opening therein.

.Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a water-trap, the combination,witl1 a discharge-chamber provided with a top cov ering centrally recessed, of a curved pipe having its discharge end central therein and opening upward and so arranged relatively to said recess of the covering of the dischargechamber as to form therewith an annular wa- IOC ter-passage and a valveseat, a ball-valve, and an air-chamber inclosing the same and secured to said discharge-ch amber substantially as described.

2. In a water-trap, the combination, with a discharge-chamber provided with a top covering centrally recessed and having an airpassage therein, of a curved inlet-pipe having its discharge end central therein and opening upward and so arranged relatively to said recess of the covering of the discharge-chamber as to form there-with an annular Water-passage and a valve-seat, a ball-valve, and an airchainber inclosing the same and secured to said discharge-chamber, substantially as described.

3. In a water-trap, the con ibination, with an air-chamber and ball-valve of a dischargechamber H, having a coveringN, provided with an air-passage L, and a curved inlet watertube 0 central in said-chamber and opening upward and arranged relatively to said covering N as to leave an annular passage between them and to form thereat a spherical Valveseat, substantially as described.

Intestimony whereof I have hereunto affixed my signature this 15th day of November, A.

WILLIAM A. MUNDY.

' Witnesses:

Gno. W. REED, H. T. FENTON. 

